Analyze the failure of the experimental instrument cryogenic coolant circulation pump

Shanghai Bilang analyzes the failure of the experimental instrument low temperature coolant circulating pump.

As a kind of experimental instrument commonly used in experiments, the cryogenic coolant circulating pump can be used with a variety of instruments (rotary evaporator, fermenter, chemical reactor, freeze drying equipment, biopharmaceutical reactor, etc.).

The experimental instrument has large refrigeration capacity and fast cooling speed, which greatly improves the working efficiency; the flow rate of the circulating pump of the machine can be customized, which can greatly meet the actual needs of different users; all models of the machine can be cooled according to user requirements. Reasonable combination with cooling capacity, low temperature and container volume. In the process of using the instrument, due to improper use or routine maintenance, there are often some problems like this. How do we deal with these problems? Let's analyze some actual fault problems.

1, fault: no temperature display

Possible cause: Check if the circuit board cable is disconnected, the sensor is off, and the circuit board is splashed.

Solution: Plug in the cable, dry the board and turn it on.

2, failure: no cooling or slow cooling

Possible cause: Whether the system has a leak and the system is dirty.

Solution: Ask a professional to fix it.

3, failure: no external circulation

Possible cause: Whether the circulation pump is blocked, the power supply box is off, the valve is open, and there is ice in the circulation pump.

Solution: Check the cable, remove the blockage, open the valve

4, failure: the whole machine has no electricity

Possible causes: leakage protector protection, fuse is blown, power phase sequence is wrong

Solution: adjust the position of the two live wires, replace the fuse, and reset the leakage protector.

In fact, the experimenter should strengthen the routine maintenance and maintenance of the experimental equipment, which not only prolongs the service life of the instrument, but also improves the utilization efficiency.

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